In the very early days of the Internet, in the 1970s and 80s, it was only really used by academics and military 2) ..... (research), but in the 1990s its 3)..... (popular) boomed in a way that had never been seen before. To illustrate this, it took 38 years for radio to reach 50 million 4) ..... (use), 13 years for TV and yet only 5 years for the Internet!

Чтобы заполнить пропуски в тексте, необходимо подобрать подходящие слова.

2) In the very early days of the Internet, in the 1970s and 80s, it was only really used by academics and military 2) ..... (research), but in the 1990s its 3)..... (popular) boomed in a way that had never been seen before.

Подходящее слово: для исследований.

Вставим его в предложение:

In the very early days of the Internet, in the 1970s and 80s, it was only really used by academics and military 2) for research, but in the 1990s its 3)..... (popular) boomed in a way that had never been seen before.

3) its (popular) boomed in a way that had never been seen before.

Подходящее слово: популярность.

Вставим его в предложение:

but in the 1990s its 3) popularity boomed in a way that had never been seen before.

4) To illustrate this, it took 38 years for radio to reach 50 million 4) ..... (use), 13 years for TV and yet only 5 years for the Internet!

Подходящее слово: пользователей.

Вставим его в предложение:

To illustrate this, it took 38 years for radio to reach 50 million 4) users, 13 years for TV and yet only 5 years for the Internet!

Ответ: 2) for research, 3) popularity, 4) users